Difference between revisions of "Erigeron lobatus"
Amer. J. Bot. 21: 580. 1934.
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|common_names=Lobed fleabane | |common_names=Lobed fleabane | ||
+ | |special_status={{Treatment/ID/Special_status | ||
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+ | |label=Illustrated | ||
+ | }} | ||
|basionyms= | |basionyms= | ||
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|publication title=Amer. J. Bot. | |publication title=Amer. J. Bot. | ||
|publication year=1934 | |publication year=1934 | ||
− | |special status= | + | |special status=Illustrated |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_774.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Erigeron | |genus=Erigeron |
Latest revision as of 21:05, 5 November 2020
Annuals, mostly 10–40(–50) cm; taprooted. Stems erect, sparsely hispido-pilose (hairs spreading, straight, 0.6–2 mm), densely stipitate-glandular. Leaves basal (persistent) and cauline; basal and proximal cauline blades obovate-spatulate, 50–100(–150) × 4–25 mm, cauline gradually reduced (lobing distally), margins pinnatifid or bipinnatifid with (1–)2–4 pairs of rounded to acute lobes, faces sparsely hispido-pilose, stipitate-glandular. Heads 1–5 (peduncles long, ebracteate). Involucres 3–4 × 6–10 mm. Phyllaries in 2–3 series (sometimes basally connate, broad, thin) sparsely hispido-pilose, stipitate glandular. Ray florets 85–110; corollas white, drying dark blue, 6–9 mm, laminae not coiling or reflexing. Disc corollas 1.8–2.9 mm. Cypselae 1.2–1.4 mm, 2-nerved, faces sparsely strigose; pappi: outer of scales (sometimes connate, forming crowns), inner of 11–12 bristles.
Phenology: Flowering (Jan–)Feb–May(–Oct).
Habitat: Stream banks, sandy lake shores, dry washes, desert or riparian scrub, sometime with creosote bush
Elevation: 300–1200 m
Distribution
![V20-774-distribution-map.gif](/w/images/5/5b/V20-774-distribution-map.gif)
Ariz., Calif., Nev., Mexico (Sonora).
Discussion
Erigeron lobatus is characterized by persistent basal and proximal cauline leaves with rounded to acute lobes, vestiture of stipitate glands and sparse, spreading, hispido-pilose hairs, heads on relatively long, ebracteate peduncles, and broad, thin phyllaries. Erigeron divergens often is similar; its glandularity is not stipitate and its nonglandular hairs are shorter and denser.
Selected References
None.